diff --git a/src/buffer/out/TextAttribute.cpp b/src/buffer/out/TextAttribute.cpp
index aa66a3ed4..ee7794022 100644
--- a/src/buffer/out/TextAttribute.cpp
+++ b/src/buffer/out/TextAttribute.cpp
@@ -10,6 +10,11 @@ bool TextAttribute::IsLegacy() const noexcept
     return _foreground.IsLegacy() && _background.IsLegacy();
 }
 
+bool TextAttribute::IsHighColor() const noexcept
+{
+    return _foreground.IsHighColor() || _background.IsHighColor();
+}
+
 // Arguments:
 // - None
 // Return Value:
@@ -72,12 +77,22 @@ void TextAttribute::SetBackground(const COLORREF rgbBackground) noexcept
 
 void TextAttribute::SetIndexedForeground(const BYTE fgIndex) noexcept
 {
-    _foreground = TextColor(fgIndex);
+    _foreground = TextColor(fgIndex, false);
 }
 
 void TextAttribute::SetIndexedBackground(const BYTE bgIndex) noexcept
 {
-    _background = TextColor(bgIndex);
+    _background = TextColor(bgIndex, false);
+}
+
+void TextAttribute::SetIndexedForeground256(const BYTE fgIndex) noexcept
+{
+    _foreground = TextColor(fgIndex, true);
+}
+
+void TextAttribute::SetIndexedBackground256(const BYTE bgIndex) noexcept
+{
+    _background = TextColor(bgIndex, true);
 }
 
 void TextAttribute::SetColor(const COLORREF rgbColor, const bool fIsForeground) noexcept
diff --git a/src/buffer/out/TextAttribute.hpp b/src/buffer/out/TextAttribute.hpp
index edabdc456..df6278e3f 100644
--- a/src/buffer/out/TextAttribute.hpp
+++ b/src/buffer/out/TextAttribute.hpp
@@ -42,8 +42,8 @@ public:
 
     constexpr TextAttribute(const WORD wLegacyAttr) noexcept :
         _wAttrLegacy{ gsl::narrow_cast<WORD>(wLegacyAttr & META_ATTRS) },
-        _foreground{ gsl::narrow_cast<BYTE>(wLegacyAttr & FG_ATTRS) },
-        _background{ gsl::narrow_cast<BYTE>((wLegacyAttr & BG_ATTRS) >> 4) },
+        _foreground{ gsl::narrow_cast<BYTE>(wLegacyAttr & FG_ATTRS), true },
+        _background{ gsl::narrow_cast<BYTE>((wLegacyAttr & BG_ATTRS) >> 4), true },
         _extendedAttrs{ ExtendedAttributes::Normal }
     {
         // If we're given lead/trailing byte information with the legacy color, strip it.
@@ -59,12 +59,13 @@ public:
     {
     }
 
-    constexpr WORD GetLegacyAttributes() const noexcept
+    WORD GetLegacyAttributes() const noexcept
     {
         const BYTE fg = (_foreground.GetIndex() & FG_ATTRS);
         const BYTE bg = (_background.GetIndex() << 4) & BG_ATTRS;
         const WORD meta = (_wAttrLegacy & META_ATTRS);
-        return (fg | bg | meta) | (IsBold() ? FOREGROUND_INTENSITY : 0);
+        const bool brighten = _foreground.IsIndex16() && IsBold();
+        return (fg | bg | meta) | (brighten ? FOREGROUND_INTENSITY : 0);
     }
 
     // Method Description:
@@ -79,15 +80,16 @@ public:
     //      the background not be a legacy style attribute.
     // Return Value:
     // - a WORD with legacy-style attributes for this textattribute.
-    constexpr WORD GetLegacyAttributes(const BYTE defaultFgIndex,
-                                       const BYTE defaultBgIndex) const noexcept
+    WORD GetLegacyAttributes(const BYTE defaultFgIndex,
+                             const BYTE defaultBgIndex) const noexcept
     {
         const BYTE fgIndex = _foreground.IsLegacy() ? _foreground.GetIndex() : defaultFgIndex;
         const BYTE bgIndex = _background.IsLegacy() ? _background.GetIndex() : defaultBgIndex;
         const BYTE fg = (fgIndex & FG_ATTRS);
         const BYTE bg = (bgIndex << 4) & BG_ATTRS;
         const WORD meta = (_wAttrLegacy & META_ATTRS);
-        return (fg | bg | meta) | (IsBold() ? FOREGROUND_INTENSITY : 0);
+        const bool brighten = _foreground.IsIndex16() && IsBold();
+        return (fg | bg | meta) | (brighten ? FOREGROUND_INTENSITY : 0);
     }
 
     COLORREF CalculateRgbForeground(std::basic_string_view<COLORREF> colorTable,
@@ -117,6 +119,7 @@ public:
     friend constexpr bool operator!=(const WORD& legacyAttr, const TextAttribute& attr) noexcept;
 
     bool IsLegacy() const noexcept;
+    bool IsHighColor() const noexcept;
     bool IsBold() const noexcept;
     bool IsItalic() const noexcept;
     bool IsBlinking() const noexcept;
@@ -139,6 +142,8 @@ public:
     void SetBackground(const COLORREF rgbBackground) noexcept;
     void SetIndexedForeground(const BYTE fgIndex) noexcept;
     void SetIndexedBackground(const BYTE bgIndex) noexcept;
+    void SetIndexedForeground256(const BYTE fgIndex) noexcept;
+    void SetIndexedBackground256(const BYTE bgIndex) noexcept;
     void SetColor(const COLORREF rgbColor, const bool fIsForeground) noexcept;
 
     void SetDefaultForeground() noexcept;
@@ -149,11 +154,6 @@ public:
 
     void SetStandardErase() noexcept;
 
-    constexpr bool IsRgb() const noexcept
-    {
-        return _foreground.IsRgb() || _background.IsRgb();
-    }
-
     // This returns whether this attribute, if printed directly next to another attribute, for the space
     // character, would look identical to the other one.
     bool HasIdenticalVisualRepresentationForBlankSpace(const TextAttribute& other, const bool inverted = false) const noexcept
@@ -224,26 +224,6 @@ constexpr bool operator!=(const TextAttribute& a, const TextAttribute& b) noexce
     return !(a == b);
 }
 
-constexpr bool operator==(const TextAttribute& attr, const WORD& legacyAttr) noexcept
-{
-    return attr.GetLegacyAttributes() == legacyAttr;
-}
-
-constexpr bool operator!=(const TextAttribute& attr, const WORD& legacyAttr) noexcept
-{
-    return !(attr == legacyAttr);
-}
-
-constexpr bool operator==(const WORD& legacyAttr, const TextAttribute& attr) noexcept
-{
-    return attr == legacyAttr;
-}
-
-constexpr bool operator!=(const WORD& legacyAttr, const TextAttribute& attr) noexcept
-{
-    return !(attr == legacyAttr);
-}
-
 #ifdef UNIT_TESTING
 
 #define LOG_ATTR(attr) (Log::Comment(NoThrowString().Format( \
diff --git a/src/buffer/out/TextColor.cpp b/src/buffer/out/TextColor.cpp
index 05fcded14..11c054fe8 100644
--- a/src/buffer/out/TextColor.cpp
+++ b/src/buffer/out/TextColor.cpp
@@ -4,6 +4,36 @@
 #include "precomp.h"
 #include "TextColor.h"
 
+bool TextColor::IsLegacy() const noexcept
+{
+    return IsIndex16() || (IsIndex256() && _index < 16);
+}
+
+bool TextColor::IsHighColor() const noexcept
+{
+    return IsRgb() || (IsIndex256() && _index >= 16);
+}
+
+bool TextColor::IsIndex16() const noexcept
+{
+    return _meta == ColorType::IsIndex16;
+}
+
+bool TextColor::IsIndex256() const noexcept
+{
+    return _meta == ColorType::IsIndex256;
+}
+
+bool TextColor::IsDefault() const noexcept
+{
+    return _meta == ColorType::IsDefault;
+}
+
+bool TextColor::IsRgb() const noexcept
+{
+    return _meta == ColorType::IsRgb;
+}
+
 // Method Description:
 // - Sets the color value of this attribute, and sets this color to be an RGB
 //      attribute.
@@ -23,11 +53,12 @@ void TextColor::SetColor(const COLORREF rgbColor) noexcept
 // - Sets this TextColor to be a legacy-style index into the color table.
 // Arguments:
 // - index: the index of the colortable we should use for this TextColor.
+// - isIndex256: is this a 256 color index (true) or a 16 color index (false).
 // Return Value:
 // - <none>
-void TextColor::SetIndex(const BYTE index) noexcept
+void TextColor::SetIndex(const BYTE index, const bool isIndex256) noexcept
 {
-    _meta = ColorType::IsIndex;
+    _meta = isIndex256 ? ColorType::IsIndex256 : ColorType::IsIndex16;
     _index = index;
 }
 
@@ -48,15 +79,15 @@ void TextColor::SetDefault() noexcept
 //   * If we're an RGB color, we'll use that value.
 //   * If we're an indexed color table value, we'll use that index to look up
 //     our value in the provided color table.
-//     - If brighten is true, and the index is in the "dark" portion of the
-//       color table (indices [0,7]), then we'll look up the bright version of
-//       this color (from indices [8,15]). This should be true for
-//       TextAttributes that are "Bold" and we're treating bold as bright
-//       (which is the default behavior of most terminals.)
+//     - If brighten is true, and we've got a 16 color index in the "dark"
+//       portion of the color table (indices [0,7]), then we'll look up the
+//       bright version of this color (from indices [8,15]). This should be
+//       true for TextAttributes that are "Bold" and we're treating bold as
+//       bright (which is the default behavior of most terminals.)
 //   * If we're a default color, we'll return the default color provided.
 // Arguments:
-// - colorTable: The table of colors we should use to look up the value of a
-//      legacy attribute from
+// - colorTable: The table of colors we should use to look up the value of
+//      an indexed attribute from.
 // - defaultColor: The color value to use if we're a default attribute.
 // - brighten: if true, we'll brighten a dark color table index.
 // Return Value:
@@ -94,21 +125,13 @@ COLORREF TextColor::GetColor(std::basic_string_view<COLORREF> colorTable,
     {
         return _GetRGB();
     }
+    else if (IsIndex16() && brighten)
+    {
+        return colorTable.at(_index | 8);
+    }
     else
     {
-        FAIL_FAST_IF(colorTable.size() < _index);
-        // If the color is already bright (it's in index [8,15] or it's a
-        //       256color value [16,255], then boldness does nothing.
-        if (brighten && _index < 8)
-        {
-            FAIL_FAST_IF(colorTable.size() < 16);
-            FAIL_FAST_IF(gsl::narrow_cast<size_t>(_index) + 8 > colorTable.size());
-            return colorTable.at(gsl::narrow_cast<size_t>(_index) + 8);
-        }
-        else
-        {
-            return colorTable.at(_index);
-        }
+        return colorTable.at(_index);
     }
 }
 
diff --git a/src/buffer/out/TextColor.h b/src/buffer/out/TextColor.h
index 21896ca04..08db63b83 100644
--- a/src/buffer/out/TextColor.h
+++ b/src/buffer/out/TextColor.h
@@ -41,9 +41,10 @@ Revision History:
 
 enum class ColorType : BYTE
 {
-    IsIndex = 0x0,
-    IsDefault = 0x1,
-    IsRgb = 0x2
+    IsIndex256 = 0x0,
+    IsIndex16 = 0x1,
+    IsDefault = 0x2,
+    IsRgb = 0x3
 };
 
 struct TextColor
@@ -57,9 +58,9 @@ public:
     {
     }
 
-    constexpr TextColor(const BYTE wLegacyAttr) noexcept :
-        _meta{ ColorType::IsIndex },
-        _index{ wLegacyAttr },
+    constexpr TextColor(const BYTE index, const bool isIndex256) noexcept :
+        _meta{ isIndex256 ? ColorType::IsIndex256 : ColorType::IsIndex16 },
+        _index{ index },
         _green{ 0 },
         _blue{ 0 }
     {
@@ -76,23 +77,15 @@ public:
     friend constexpr bool operator==(const TextColor& a, const TextColor& b) noexcept;
     friend constexpr bool operator!=(const TextColor& a, const TextColor& b) noexcept;
 
-    constexpr bool IsLegacy() const noexcept
-    {
-        return !(IsDefault() || IsRgb());
-    }
-
-    constexpr bool IsDefault() const noexcept
-    {
-        return _meta == ColorType::IsDefault;
-    }
-
-    constexpr bool IsRgb() const noexcept
-    {
-        return _meta == ColorType::IsRgb;
-    }
+    bool IsLegacy() const noexcept;
+    bool IsHighColor() const noexcept;
+    bool IsIndex16() const noexcept;
+    bool IsIndex256() const noexcept;
+    bool IsDefault() const noexcept;
+    bool IsRgb() const noexcept;
 
     void SetColor(const COLORREF rgbColor) noexcept;
-    void SetIndex(const BYTE index) noexcept;
+    void SetIndex(const BYTE index, const bool isIndex256) noexcept;
     void SetDefault() noexcept;
 
     COLORREF GetColor(std::basic_string_view<COLORREF> colorTable,
diff --git a/src/buffer/out/ut_textbuffer/TextColorTests.cpp b/src/buffer/out/ut_textbuffer/TextColorTests.cpp
index 3497bdcae..794331fee 100644
--- a/src/buffer/out/ut_textbuffer/TextColorTests.cpp
+++ b/src/buffer/out/ut_textbuffer/TextColorTests.cpp
@@ -81,7 +81,7 @@ void TextColorTests::TestDefaultColor()
 
 void TextColorTests::TestDarkIndexColor()
 {
-    TextColor indexColor((BYTE)(7));
+    TextColor indexColor((BYTE)(7), false);
 
     VERIFY_IS_FALSE(indexColor.IsDefault());
     VERIFY_IS_TRUE(indexColor.IsLegacy());
@@ -104,7 +104,7 @@ void TextColorTests::TestDarkIndexColor()
 
 void TextColorTests::TestBrightIndexColor()
 {
-    TextColor indexColor((BYTE)(15));
+    TextColor indexColor((BYTE)(15), false);
 
     VERIFY_IS_FALSE(indexColor.IsDefault());
     VERIFY_IS_TRUE(indexColor.IsLegacy());
@@ -186,7 +186,7 @@ void TextColorTests::TestChangeColor()
     color = rgbColor.GetColor(view, _defaultBg, true);
     VERIFY_ARE_EQUAL(_defaultBg, color);
 
-    rgbColor.SetIndex(7);
+    rgbColor.SetIndex(7, false);
     color = rgbColor.GetColor(view, _defaultFg, false);
     VERIFY_ARE_EQUAL(_colorTable[7], color);
 
@@ -199,7 +199,7 @@ void TextColorTests::TestChangeColor()
     color = rgbColor.GetColor(view, _defaultBg, true);
     VERIFY_ARE_EQUAL(_colorTable[15], color);
 
-    rgbColor.SetIndex(15);
+    rgbColor.SetIndex(15, false);
     color = rgbColor.GetColor(view, _defaultFg, false);
     VERIFY_ARE_EQUAL(_colorTable[15], color);
 
diff --git a/src/cascadia/TerminalCore/ITerminalApi.hpp b/src/cascadia/TerminalCore/ITerminalApi.hpp
index b521f4ece..5b1f3d0ec 100644
--- a/src/cascadia/TerminalCore/ITerminalApi.hpp
+++ b/src/cascadia/TerminalCore/ITerminalApi.hpp
@@ -21,6 +21,8 @@ namespace Microsoft::Terminal::Core
         virtual bool SetTextToDefaults(bool foreground, bool background) noexcept = 0;
         virtual bool SetTextForegroundIndex(BYTE colorIndex) noexcept = 0;
         virtual bool SetTextBackgroundIndex(BYTE colorIndex) noexcept = 0;
+        virtual bool SetTextForegroundIndex256(BYTE colorIndex) noexcept = 0;
+        virtual bool SetTextBackgroundIndex256(BYTE colorIndex) noexcept = 0;
         virtual bool SetTextRgbColor(COLORREF color, bool foreground) noexcept = 0;
         virtual bool BoldText(bool boldOn) noexcept = 0;
         virtual bool UnderlineText(bool underlineOn) noexcept = 0;
diff --git a/src/cascadia/TerminalCore/Terminal.hpp b/src/cascadia/TerminalCore/Terminal.hpp
index fd0e70e4d..55b1ef2dc 100644
--- a/src/cascadia/TerminalCore/Terminal.hpp
+++ b/src/cascadia/TerminalCore/Terminal.hpp
@@ -81,6 +81,8 @@ public:
     bool SetTextToDefaults(bool foreground, bool background) noexcept override;
     bool SetTextForegroundIndex(BYTE colorIndex) noexcept override;
     bool SetTextBackgroundIndex(BYTE colorIndex) noexcept override;
+    bool SetTextForegroundIndex256(BYTE colorIndex) noexcept override;
+    bool SetTextBackgroundIndex256(BYTE colorIndex) noexcept override;
     bool SetTextRgbColor(COLORREF color, bool foreground) noexcept override;
     bool BoldText(bool boldOn) noexcept override;
     bool UnderlineText(bool underlineOn) noexcept override;
diff --git a/src/cascadia/TerminalCore/TerminalApi.cpp b/src/cascadia/TerminalCore/TerminalApi.cpp
index 4189e07b1..72abe4e61 100644
--- a/src/cascadia/TerminalCore/TerminalApi.cpp
+++ b/src/cascadia/TerminalCore/TerminalApi.cpp
@@ -57,6 +57,22 @@ bool Terminal::SetTextBackgroundIndex(BYTE colorIndex) noexcept
     return true;
 }
 
+bool Terminal::SetTextForegroundIndex256(BYTE colorIndex) noexcept
+{
+    TextAttribute attrs = _buffer->GetCurrentAttributes();
+    attrs.SetIndexedForeground256(colorIndex);
+    _buffer->SetCurrentAttributes(attrs);
+    return true;
+}
+
+bool Terminal::SetTextBackgroundIndex256(BYTE colorIndex) noexcept
+{
+    TextAttribute attrs = _buffer->GetCurrentAttributes();
+    attrs.SetIndexedBackground256(colorIndex);
+    _buffer->SetCurrentAttributes(attrs);
+    return true;
+}
+
 bool Terminal::SetTextRgbColor(COLORREF color, bool foreground) noexcept
 {
     TextAttribute attrs = _buffer->GetCurrentAttributes();
diff --git a/src/cascadia/TerminalCore/TerminalDispatchGraphics.cpp b/src/cascadia/TerminalCore/TerminalDispatchGraphics.cpp
index 0a37cebed..4403de582 100644
--- a/src/cascadia/TerminalCore/TerminalDispatchGraphics.cpp
+++ b/src/cascadia/TerminalCore/TerminalDispatchGraphics.cpp
@@ -121,8 +121,8 @@ bool TerminalDispatch::_SetRgbColorsHelper(const std::basic_string_view<Dispatch
             {
                 const auto tableIndex = til::at(options, 2);
                 success = isForeground ?
-                              _terminalApi.SetTextForegroundIndex(gsl::narrow_cast<BYTE>(tableIndex)) :
-                              _terminalApi.SetTextBackgroundIndex(gsl::narrow_cast<BYTE>(tableIndex));
+                              _terminalApi.SetTextForegroundIndex256(gsl::narrow_cast<BYTE>(tableIndex)) :
+                              _terminalApi.SetTextBackgroundIndex256(gsl::narrow_cast<BYTE>(tableIndex));
             }
         }
     }
diff --git a/src/cascadia/UnitTests_TerminalCore/ConptyRoundtripTests.cpp b/src/cascadia/UnitTests_TerminalCore/ConptyRoundtripTests.cpp
index 062969f93..541989d42 100644
--- a/src/cascadia/UnitTests_TerminalCore/ConptyRoundtripTests.cpp
+++ b/src/cascadia/UnitTests_TerminalCore/ConptyRoundtripTests.cpp
@@ -119,8 +119,7 @@ class TerminalCoreUnitTests::ConptyRoundtripTests final
         auto vtRenderEngine = std::make_unique<Xterm256Engine>(std::move(hFile),
                                                                gci,
                                                                initialViewport,
-                                                               gci.GetColorTable(),
-                                                               static_cast<WORD>(gci.GetColorTableSize()));
+                                                               gci.Get16ColorTable());
         auto pfn = std::bind(&ConptyRoundtripTests::_writeCallback, this, std::placeholders::_1, std::placeholders::_2);
         vtRenderEngine->SetTestCallback(pfn);
 
diff --git a/src/host/VtIo.cpp b/src/host/VtIo.cpp
index 09b3af630..3fea6aa60 100644
--- a/src/host/VtIo.cpp
+++ b/src/host/VtIo.cpp
@@ -161,31 +161,27 @@ VtIo::VtIo() :
                 _pVtRenderEngine = std::make_unique<Xterm256Engine>(std::move(_hOutput),
                                                                     gci,
                                                                     initialViewport,
-                                                                    gci.GetColorTable(),
-                                                                    static_cast<WORD>(gci.GetColorTableSize()));
+                                                                    gci.Get16ColorTable());
                 break;
             case VtIoMode::XTERM:
                 _pVtRenderEngine = std::make_unique<XtermEngine>(std::move(_hOutput),
                                                                  gci,
                                                                  initialViewport,
-                                                                 gci.GetColorTable(),
-                                                                 static_cast<WORD>(gci.GetColorTableSize()),
+                                                                 gci.Get16ColorTable(),
                                                                  false);
                 break;
             case VtIoMode::XTERM_ASCII:
                 _pVtRenderEngine = std::make_unique<XtermEngine>(std::move(_hOutput),
                                                                  gci,
                                                                  initialViewport,
-                                                                 gci.GetColorTable(),
-                                                                 static_cast<WORD>(gci.GetColorTableSize()),
+                                                                 gci.Get16ColorTable(),
                                                                  true);
                 break;
             case VtIoMode::WIN_TELNET:
                 _pVtRenderEngine = std::make_unique<WinTelnetEngine>(std::move(_hOutput),
                                                                      gci,
                                                                      initialViewport,
-                                                                     gci.GetColorTable(),
-                                                                     static_cast<WORD>(gci.GetColorTableSize()));
+                                                                     gci.Get16ColorTable());
                 break;
             default:
                 return E_FAIL;
diff --git a/src/host/conattrs.cpp b/src/host/conattrs.cpp
index c33864d8a..b64ff757f 100644
--- a/src/host/conattrs.cpp
+++ b/src/host/conattrs.cpp
@@ -81,13 +81,12 @@ static double _FindDifference(const _HSL* const phslColorA, const COLORREF rgbCo
 //Arguments:
 // - Color - The RGB color to fine the nearest color to.
 // - ColorTable - The array of colors to find a nearest color from.
-// - cColorTable - The number of elements in ColorTable
 // Return value:
 // The index in ColorTable of the nearest match to Color.
-WORD FindNearestTableIndex(const COLORREF Color, _In_reads_(cColorTable) const COLORREF* const ColorTable, const WORD cColorTable)
+WORD FindNearestTableIndex(const COLORREF Color, const std::basic_string_view<COLORREF> ColorTable)
 {
     // Quick check for an exact match in the color table:
-    for (WORD i = 0; i < cColorTable; i++)
+    for (WORD i = 0; i < ColorTable.size(); i++)
     {
         if (Color == ColorTable[i])
         {
@@ -100,7 +99,7 @@ WORD FindNearestTableIndex(const COLORREF Color, _In_reads_(cColorTable) const C
     const _HSL hslColor = _HSL(Color);
     WORD closest = 0;
     double minDiff = _FindDifference(&hslColor, ColorTable[0]);
-    for (WORD i = 1; i < cColorTable; i++)
+    for (WORD i = 1; i < ColorTable.size(); i++)
     {
         double diff = _FindDifference(&hslColor, ColorTable[i]);
         if (diff < minDiff)
@@ -146,36 +145,19 @@ WORD Xterm256ToWindowsIndex(const size_t xtermTableEntry) noexcept
                                   static_cast<WORD>(xtermTableEntry);
 }
 
-// Function Description:
-// - Converts the value of a pair of xterm color table indices to the legacy attr equivalent.
-// Arguments:
-// - xtermForeground: the xterm color table foreground index
-// - xtermBackground: the xterm color table background index
-// Return Value:
-// - The legacy windows attribute equivalent.
-WORD XtermToLegacy(const size_t xtermForeground, const size_t xtermBackground)
-{
-    const WORD fgAttr = XtermToWindowsIndex(xtermForeground);
-    const WORD bgAttr = XtermToWindowsIndex(xtermBackground);
-
-    return (bgAttr << 4) | fgAttr;
-}
-
 //Routine Description:
 // Returns the exact entry from the color table, if it's in there.
 //Arguments:
 // - Color - The RGB color to fine the nearest color to.
 // - ColorTable - The array of colors to find a nearest color from.
-// - cColorTable - The number of elements in ColorTable
 // Return value:
 // The index in ColorTable of the nearest match to Color.
 bool FindTableIndex(const COLORREF Color,
-                    _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                    const WORD cColorTable,
+                    const std::basic_string_view<COLORREF> ColorTable,
                     _Out_ WORD* const pFoundIndex)
 {
     *pFoundIndex = 0;
-    for (WORD i = 0; i < cColorTable; i++)
+    for (WORD i = 0; i < ColorTable.size(); i++)
     {
         if (ColorTable[i] == Color)
         {
@@ -185,41 +167,3 @@ bool FindTableIndex(const COLORREF Color,
     }
     return false;
 }
-
-// Method Description:
-// - Get a COLORREF for the foreground component of the given legacy attributes.
-// Arguments:
-// - wLegacyAttrs - The legacy attributes to get the foreground color from.
-// - ColorTable - The array of colors to get the color from.
-// - cColorTable - The number of elements in ColorTable
-// Return Value:
-// - the COLORREF for the foreground component
-COLORREF ForegroundColor(const WORD wLegacyAttrs,
-                         _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                         const size_t cColorTable)
-{
-    const byte iColorTableIndex = LOBYTE(wLegacyAttrs) & FG_ATTRS;
-
-    return (iColorTableIndex < cColorTable && iColorTableIndex >= 0) ?
-               ColorTable[iColorTableIndex] :
-               INVALID_COLOR;
-}
-
-// Method Description:
-// - Get a COLORREF for the background component of the given legacy attributes.
-// Arguments:
-// - wLegacyAttrs - The legacy attributes to get the background color from.
-// - ColorTable - The array of colors to get the color from.
-// - cColorTable - The number of elements in ColorTable
-// Return Value:
-// - the COLORREF for the background component
-COLORREF BackgroundColor(const WORD wLegacyAttrs,
-                         _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                         const size_t cColorTable)
-{
-    const byte iColorTableIndex = (LOBYTE(wLegacyAttrs) & BG_ATTRS) >> 4;
-
-    return (iColorTableIndex < cColorTable && iColorTableIndex >= 0) ?
-               ColorTable[iColorTableIndex] :
-               INVALID_COLOR;
-}
diff --git a/src/host/getset.cpp b/src/host/getset.cpp
index b7af4741e..0699e72ab 100644
--- a/src/host/getset.cpp
+++ b/src/host/getset.cpp
@@ -572,7 +572,10 @@ void ApiRoutines::GetLargestConsoleWindowSizeImpl(const SCREEN_INFORMATION& cont
         }
         const COORD newBufferSize = context.GetBufferSize().Dimensions();
 
-        gci.SetColorTable(data.ColorTable, ARRAYSIZE(data.ColorTable));
+        for (size_t i = 0; i < std::size(data.ColorTable); i++)
+        {
+            gci.SetColorTableEntry(i, data.ColorTable[i]);
+        }
 
         context.SetDefaultAttributes({ data.wAttributes }, { data.wPopupAttributes });
 
diff --git a/src/host/screenInfo.cpp b/src/host/screenInfo.cpp
index ecd49d0c5..2aa6a3b51 100644
--- a/src/host/screenInfo.cpp
+++ b/src/host/screenInfo.cpp
@@ -360,7 +360,10 @@ void SCREEN_INFORMATION::GetScreenBufferInformation(_Out_ PCOORD pcoordSize,
     *pwPopupAttributes = gci.GenerateLegacyAttributes(_PopupAttributes);
 
     // the copy length must be constant for now to keep OACR happy with buffer overruns.
-    memmove(lpColorTable, gci.GetColorTable(), COLOR_TABLE_SIZE * sizeof(COLORREF));
+    for (size_t i = 0; i < COLOR_TABLE_SIZE; i++)
+    {
+        lpColorTable[i] = gci.GetColorTableEntry(i);
+    }
 
     *pcoordMaximumWindowSize = GetMaxWindowSizeInCharacters();
 }
diff --git a/src/host/settings.cpp b/src/host/settings.cpp
index 154d3b921..58f14cc7d 100644
--- a/src/host/settings.cpp
+++ b/src/host/settings.cpp
@@ -81,9 +81,8 @@ Settings::Settings() :
     _CursorColor = Cursor::s_InvertCursorColor;
     _CursorType = CursorType::Legacy;
 
-    gsl::span<COLORREF> tableView = { _ColorTable, gsl::narrow<ptrdiff_t>(COLOR_TABLE_SIZE) };
-    gsl::span<COLORREF> xtermTableView = { _XtermColorTable, gsl::narrow<ptrdiff_t>(XTERM_COLOR_TABLE_SIZE) };
-    ::Microsoft::Console::Utils::Initialize256ColorTable(xtermTableView);
+    gsl::span<COLORREF> tableView = { _colorTable.data(), gsl::narrow<ptrdiff_t>(_colorTable.size()) };
+    ::Microsoft::Console::Utils::Initialize256ColorTable(tableView);
     ::Microsoft::Console::Utils::InitializeCampbellColorTableForConhost(tableView);
 }
 
@@ -123,7 +122,7 @@ void Settings::ApplyDesktopSpecificDefaults()
     _uNumberOfHistoryBuffers = 4;
     _bHistoryNoDup = FALSE;
 
-    gsl::span<COLORREF> tableView = { _ColorTable, gsl::narrow<ptrdiff_t>(COLOR_TABLE_SIZE) };
+    gsl::span<COLORREF> tableView = { _colorTable.data(), gsl::narrow<ptrdiff_t>(_colorTable.size()) };
     ::Microsoft::Console::Utils::InitializeCampbellColorTableForConhost(tableView);
 
     _fTrimLeadingZeros = false;
@@ -221,7 +220,10 @@ void Settings::InitFromStateInfo(_In_ PCONSOLE_STATE_INFO pStateInfo)
     _bHistoryNoDup = pStateInfo->HistoryNoDup;
     _uHistoryBufferSize = pStateInfo->HistoryBufferSize;
     _uNumberOfHistoryBuffers = pStateInfo->NumberOfHistoryBuffers;
-    memmove(_ColorTable, pStateInfo->ColorTable, sizeof(_ColorTable));
+    for (size_t i = 0; i < std::size(pStateInfo->ColorTable); i++)
+    {
+        SetColorTableEntry(i, pStateInfo->ColorTable[i]);
+    }
     _uCodePage = pStateInfo->CodePage;
     _bWrapText = !!pStateInfo->fWrapText;
     _fFilterOnPaste = pStateInfo->fFilterOnPaste;
@@ -263,7 +265,10 @@ CONSOLE_STATE_INFO Settings::CreateConsoleStateInfo() const
     csi.HistoryNoDup = _bHistoryNoDup;
     csi.HistoryBufferSize = _uHistoryBufferSize;
     csi.NumberOfHistoryBuffers = _uNumberOfHistoryBuffers;
-    memmove(csi.ColorTable, _ColorTable, sizeof(_ColorTable));
+    for (size_t i = 0; i < std::size(csi.ColorTable); i++)
+    {
+        csi.ColorTable[i] = GetColorTableEntry(i);
+    }
     csi.CodePage = _uCodePage;
     csi.fWrapText = !!_bWrapText;
     csi.fFilterOnPaste = _fFilterOnPaste;
@@ -717,26 +722,19 @@ void Settings::SetHistoryNoDup(const bool bHistoryNoDup)
     _bHistoryNoDup = bHistoryNoDup;
 }
 
-const COLORREF* const Settings::GetColorTable() const
+std::basic_string_view<COLORREF> Settings::Get16ColorTable() const
 {
-    return _ColorTable;
+    return Get256ColorTable().substr(0, 16);
 }
-void Settings::SetColorTable(_In_reads_(cSize) const COLORREF* const pColorTable, const size_t cSize)
-{
-    size_t cSizeWritten = std::min(cSize, static_cast<size_t>(COLOR_TABLE_SIZE));
 
-    memmove(_ColorTable, pColorTable, cSizeWritten * sizeof(COLORREF));
+std::basic_string_view<COLORREF> Settings::Get256ColorTable() const
+{
+    return { _colorTable.data(), _colorTable.size() };
 }
+
 void Settings::SetColorTableEntry(const size_t index, const COLORREF ColorValue)
 {
-    if (index < ARRAYSIZE(_ColorTable))
-    {
-        _ColorTable[index] = ColorValue;
-    }
-    else
-    {
-        _XtermColorTable[index] = ColorValue;
-    }
+    _colorTable.at(index) = ColorValue;
 }
 
 bool Settings::IsStartupTitleIsLinkNameSet() const
@@ -754,21 +752,9 @@ void Settings::UnsetStartupFlag(const DWORD dwFlagToUnset)
     _dwStartupFlags &= ~dwFlagToUnset;
 }
 
-const size_t Settings::GetColorTableSize() const
-{
-    return ARRAYSIZE(_ColorTable);
-}
-
 COLORREF Settings::GetColorTableEntry(const size_t index) const
 {
-    if (index < ARRAYSIZE(_ColorTable))
-    {
-        return _ColorTable[index];
-    }
-    else
-    {
-        return _XtermColorTable[index];
-    }
+    return _colorTable.at(index);
 }
 
 // Routine Description:
@@ -792,19 +778,21 @@ WORD Settings::GenerateLegacyAttributes(const TextAttribute attributes) const
     BYTE bgIndex = static_cast<BYTE>((_wFillAttribute & BG_ATTRS) >> 4);
     // If the attributes have any RGB components, we need to match that RGB
     //      color to a color table value.
-    if (attributes.IsRgb())
+    if (attributes.IsHighColor())
     {
         // If the attribute doesn't have a "default" colored *ground, look up
         //  the nearest color table value for its *ground.
-        const COLORREF rgbForeground = LookupForegroundColor(attributes);
-        fgIndex = attributes.ForegroundIsDefault() ?
-                      fgIndex :
-                      static_cast<BYTE>(FindNearestTableIndex(rgbForeground));
+        if (!attributes.ForegroundIsDefault())
+        {
+            const COLORREF rgbForeground = LookupForegroundColor(attributes);
+            fgIndex = static_cast<BYTE>(::FindNearestTableIndex(rgbForeground, Get16ColorTable()));
+        }
 
-        const COLORREF rgbBackground = LookupBackgroundColor(attributes);
-        bgIndex = attributes.BackgroundIsDefault() ?
-                      bgIndex :
-                      static_cast<BYTE>(FindNearestTableIndex(rgbBackground));
+        if (!attributes.BackgroundIsDefault())
+        {
+            const COLORREF rgbBackground = LookupBackgroundColor(attributes);
+            bgIndex = static_cast<BYTE>(::FindNearestTableIndex(rgbBackground, Get16ColorTable()));
+        }
     }
 
     // TextAttribute::GetLegacyAttributes(BYTE, BYTE) will use the legacy value
@@ -815,19 +803,6 @@ WORD Settings::GenerateLegacyAttributes(const TextAttribute attributes) const
     return wCompleteAttr;
 }
 
-//Routine Description:
-// For a given RGB color Color, finds the nearest color from the array ColorTable, and returns the index of that match.
-//Arguments:
-// - Color - The RGB color to fine the nearest color to.
-// - ColorTable - The array of colors to find a nearest color from.
-// - cColorTable - The number of elements in ColorTable
-// Return value:
-// The index in ColorTable of the nearest match to Color.
-WORD Settings::FindNearestTableIndex(const COLORREF Color) const
-{
-    return ::FindNearestTableIndex(Color, _ColorTable, ARRAYSIZE(_ColorTable));
-}
-
 COLORREF Settings::GetCursorColor() const noexcept
 {
     return _CursorColor;
@@ -924,7 +899,7 @@ bool Settings::GetUseDx() const noexcept
 COLORREF Settings::CalculateDefaultForeground() const noexcept
 {
     const auto fg = GetDefaultForegroundColor();
-    return fg != INVALID_COLOR ? fg : ForegroundColor(GetFillAttribute(), GetColorTable(), GetColorTableSize());
+    return fg != INVALID_COLOR ? fg : GetColorTableEntry(LOBYTE(_wFillAttribute) & FG_ATTRS);
 }
 
 // Method Description:
@@ -939,7 +914,7 @@ COLORREF Settings::CalculateDefaultForeground() const noexcept
 COLORREF Settings::CalculateDefaultBackground() const noexcept
 {
     const auto bg = GetDefaultBackgroundColor();
-    return bg != INVALID_COLOR ? bg : BackgroundColor(GetFillAttribute(), GetColorTable(), GetColorTableSize());
+    return bg != INVALID_COLOR ? bg : GetColorTableEntry((LOBYTE(_wFillAttribute) & BG_ATTRS) >> 4);
 }
 
 // Method Description:
@@ -951,7 +926,7 @@ COLORREF Settings::CalculateDefaultBackground() const noexcept
 // - The color value of the attribute's foreground TextColor.
 COLORREF Settings::LookupForegroundColor(const TextAttribute& attr) const noexcept
 {
-    const auto tableView = std::basic_string_view<COLORREF>(&GetColorTable()[0], GetColorTableSize());
+    const auto tableView = Get256ColorTable();
     if (_fScreenReversed)
     {
         return attr.CalculateRgbBackground(tableView, CalculateDefaultForeground(), CalculateDefaultBackground());
@@ -971,7 +946,7 @@ COLORREF Settings::LookupForegroundColor(const TextAttribute& attr) const noexce
 // - The color value of the attribute's background TextColor.
 COLORREF Settings::LookupBackgroundColor(const TextAttribute& attr) const noexcept
 {
-    const auto tableView = std::basic_string_view<COLORREF>(&GetColorTable()[0], GetColorTableSize());
+    const auto tableView = Get256ColorTable();
     if (_fScreenReversed)
     {
         return attr.CalculateRgbForeground(tableView, CalculateDefaultForeground(), CalculateDefaultBackground());
diff --git a/src/host/settings.hpp b/src/host/settings.hpp
index 05503cf97..2163204c9 100644
--- a/src/host/settings.hpp
+++ b/src/host/settings.hpp
@@ -159,9 +159,8 @@ public:
     bool GetHistoryNoDup() const;
     void SetHistoryNoDup(const bool fHistoryNoDup);
 
-    const COLORREF* const GetColorTable() const;
-    const size_t GetColorTableSize() const;
-    void SetColorTable(_In_reads_(cSize) const COLORREF* const pColorTable, const size_t cSize);
+    std::basic_string_view<COLORREF> Get16ColorTable() const;
+    std::basic_string_view<COLORREF> Get256ColorTable() const;
     void SetColorTableEntry(const size_t index, const COLORREF ColorValue);
     COLORREF GetColorTableEntry(const size_t index) const;
 
@@ -217,7 +216,6 @@ private:
     UINT _uHistoryBufferSize;
     UINT _uNumberOfHistoryBuffers;
     BOOL _bHistoryNoDup;
-    COLORREF _ColorTable[COLOR_TABLE_SIZE];
     // END - memcpy
     UINT _uCodePage;
     UINT _uScrollScale;
@@ -238,7 +236,7 @@ private:
     bool _fUseDx;
     bool _fCopyColor;
 
-    COLORREF _XtermColorTable[XTERM_COLOR_TABLE_SIZE];
+    std::array<COLORREF, XTERM_COLOR_TABLE_SIZE> _colorTable;
 
     // this is used for the special STARTF_USESIZE mode.
     bool _fUseWindowSizePixels;
@@ -257,5 +255,4 @@ private:
 
 public:
     WORD GenerateLegacyAttributes(const TextAttribute attributes) const;
-    WORD FindNearestTableIndex(const COLORREF Color) const;
 };
diff --git a/src/host/telemetry.cpp b/src/host/telemetry.cpp
index 7a0d91601..4f4d1bb10 100644
--- a/src/host/telemetry.cpp
+++ b/src/host/telemetry.cpp
@@ -419,7 +419,7 @@ void Telemetry::WriteFinalTraceLog()
                                     TraceLoggingBool(gci.GetQuickEdit(), "QuickEdit"),
                                     TraceLoggingValue(gci.GetWindowAlpha(), "WindowAlpha"),
                                     TraceLoggingBool(gci.GetWrapText(), "WrapText"),
-                                    TraceLoggingUInt32Array((UINT32 const*)gci.GetColorTable(), (UINT16)gci.GetColorTableSize(), "ColorTable"),
+                                    TraceLoggingUInt32Array((UINT32 const*)gci.Get16ColorTable().data(), (UINT16)gci.Get16ColorTable().size(), "ColorTable"),
                                     TraceLoggingValue(gci.CP, "CodePageInput"),
                                     TraceLoggingValue(gci.OutputCP, "CodePageOutput"),
                                     TraceLoggingValue(gci.GetFontSize().X, "FontSizeX"),
@@ -453,7 +453,7 @@ void Telemetry::WriteFinalTraceLog()
                                     TraceLoggingValue(gci.GetShowWindow(), "ShowWindow"),
                                     TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
                                     TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-            static_assert(sizeof(UINT32) == sizeof(*gci.GetColorTable()), "gci.GetColorTable()");
+            static_assert(sizeof(UINT32) == sizeof(gci.Get16ColorTable()[0]), "gci.Get16ColorTable()");
 
             // I could use the TraceLoggingUIntArray, but then we would have to know the order of the enums on the backend.
             // So just log each enum count separately with its string representation which makes it more human readable.
diff --git a/src/host/ut_host/ConptyOutputTests.cpp b/src/host/ut_host/ConptyOutputTests.cpp
index 071e7dd21..6c76aae19 100644
--- a/src/host/ut_host/ConptyOutputTests.cpp
+++ b/src/host/ut_host/ConptyOutputTests.cpp
@@ -88,8 +88,7 @@ class ConptyOutputTests
         auto vtRenderEngine = std::make_unique<Xterm256Engine>(std::move(hFile),
                                                                gci,
                                                                initialViewport,
-                                                               gci.GetColorTable(),
-                                                               static_cast<WORD>(gci.GetColorTableSize()));
+                                                               gci.Get16ColorTable());
         auto pfn = std::bind(&ConptyOutputTests::_writeCallback, this, std::placeholders::_1, std::placeholders::_2);
         vtRenderEngine->SetTestCallback(pfn);
 
diff --git a/src/host/ut_host/ScreenBufferTests.cpp b/src/host/ut_host/ScreenBufferTests.cpp
index 2ca2f63e0..ebda0167a 100644
--- a/src/host/ut_host/ScreenBufferTests.cpp
+++ b/src/host/ut_host/ScreenBufferTests.cpp
@@ -1844,7 +1844,9 @@ void ScreenBufferTests::VtEraseAllPersistCursorFillColor()
         L"Change the colors to dark_red on bright_blue, then execute a Erase All.\n"
         L"The viewport should be full of dark_red on bright_blue"));
 
-    auto expectedAttr = TextAttribute(XtermToLegacy(1, 12));
+    auto expectedAttr = TextAttribute{};
+    expectedAttr.SetIndexedForeground((BYTE)XtermToWindowsIndex(1));
+    expectedAttr.SetIndexedBackground((BYTE)XtermToWindowsIndex(12));
     stateMachine.ProcessString(L"\x1b[31;104m");
 
     VERIFY_ARE_EQUAL(expectedAttr, si.GetAttributes());
@@ -2222,12 +2224,14 @@ void ScreenBufferTests::SetDefaultsIndividuallyBothDefault()
 
     // See the log comment above for description of these values.
     TextAttribute expectedDefaults{};
-    TextAttribute expectedTwo{ FOREGROUND_GREEN | FOREGROUND_INTENSITY | BACKGROUND_BLUE };
-    TextAttribute expectedThree{ FOREGROUND_GREEN | FOREGROUND_INTENSITY | BACKGROUND_BLUE };
+    TextAttribute expectedTwo;
+    expectedTwo.SetIndexedForeground((BYTE)XtermToWindowsIndex(10));
+    expectedTwo.SetIndexedBackground((BYTE)XtermToWindowsIndex(4));
+    TextAttribute expectedThree = expectedTwo;
     expectedThree.SetDefaultForeground();
     // Four is the same as Defaults
     // Five is the same as two
-    TextAttribute expectedSix{ FOREGROUND_GREEN | FOREGROUND_INTENSITY | BACKGROUND_BLUE };
+    TextAttribute expectedSix = expectedTwo;
     expectedSix.SetDefaultBackground();
 
     COORD expectedCursor{ 6, 0 };
@@ -2324,7 +2328,7 @@ void ScreenBufferTests::SetDefaultsTogether()
     // See the log comment above for description of these values.
     TextAttribute expectedDefaults{};
     TextAttribute expectedTwo{};
-    expectedTwo.SetBackground(color250);
+    expectedTwo.SetIndexedBackground256(250);
 
     COORD expectedCursor{ 3, 0 };
     VERIFY_ARE_EQUAL(expectedCursor, cursor.GetPosition());
@@ -4503,14 +4507,14 @@ void ScreenBufferTests::ScrollLines256Colors()
     auto& cursor = si.GetTextBuffer().GetCursor();
 
     TextAttribute expectedAttr{ si.GetAttributes() };
-    std::wstring_view sgrSeq = L"\x1b[48;5;2m";
+    std::wstring_view sgrSeq = L"\x1b[42m";
     if (colorStyle == Use16Color)
     {
-        expectedAttr.SetBackground(gci.GetColorTableEntry(2));
+        expectedAttr.SetIndexedBackground(2);
     }
     else if (colorStyle == Use256Color)
     {
-        expectedAttr.SetBackground(gci.GetColorTableEntry(20));
+        expectedAttr.SetIndexedBackground256(20);
         sgrSeq = L"\x1b[48;5;20m";
     }
     else if (colorStyle == UseRGBColor)
@@ -5237,7 +5241,7 @@ void ScreenBufferTests::TestExtendedTextAttributesWithColors()
     }
     else if (setForegroundType == Use256Color)
     {
-        expectedAttr.SetForeground(gci.GetColorTableEntry(20));
+        expectedAttr.SetIndexedForeground256(20);
         vtSeq += L"\x1b[38;5;20m";
     }
     else if (setForegroundType == UseRGBColor)
@@ -5259,7 +5263,7 @@ void ScreenBufferTests::TestExtendedTextAttributesWithColors()
     }
     else if (setBackgroundType == Use256Color)
     {
-        expectedAttr.SetBackground(gci.GetColorTableEntry(20));
+        expectedAttr.SetIndexedBackground256(20);
         vtSeq += L"\x1b[48;5;20m";
     }
     else if (setBackgroundType == UseRGBColor)
diff --git a/src/host/ut_host/TextBufferIteratorTests.cpp b/src/host/ut_host/TextBufferIteratorTests.cpp
index 13630a51a..55f0ae328 100644
--- a/src/host/ut_host/TextBufferIteratorTests.cpp
+++ b/src/host/ut_host/TextBufferIteratorTests.cpp
@@ -498,7 +498,7 @@ void TextBufferIteratorTests::DereferenceOperatorCell()
 
     const auto textExpected = (std::wstring_view)row.GetCharRow().GlyphAt(it._pos.X);
     const auto dbcsExpected = row.GetCharRow().DbcsAttrAt(it._pos.X);
-    const auto attrExpected = row.GetAttrRow().GetAttrByColumn(it._pos.X).GetLegacyAttributes();
+    const auto attrExpected = row.GetAttrRow().GetAttrByColumn(it._pos.X);
 
     const auto cellActual = *it;
     const auto textActual = cellActual.Chars();
diff --git a/src/host/ut_host/VtIoTests.cpp b/src/host/ut_host/VtIoTests.cpp
index f9f609464..01124b083 100644
--- a/src/host/ut_host/VtIoTests.cpp
+++ b/src/host/ut_host/VtIoTests.cpp
@@ -124,28 +124,28 @@ void VtIoTests::DtorTestJustEngine()
 
         wil::unique_hfile hOutputFile;
         hOutputFile.reset(INVALID_HANDLE_VALUE);
-        auto pRenderer256 = new Xterm256Engine(std::move(hOutputFile), p, SetUpViewport(), colorTable, colorTableSize);
+        auto pRenderer256 = new Xterm256Engine(std::move(hOutputFile), p, SetUpViewport(), colorTable);
         Log::Comment(NoThrowString().Format(L"Made Xterm256Engine"));
         delete pRenderer256;
         Log::Comment(NoThrowString().Format(L"Deleted."));
 
         hOutputFile.reset(INVALID_HANDLE_VALUE);
 
-        auto pRenderEngineXterm = new XtermEngine(std::move(hOutputFile), p, SetUpViewport(), colorTable, colorTableSize, false);
+        auto pRenderEngineXterm = new XtermEngine(std::move(hOutputFile), p, SetUpViewport(), colorTable, false);
         Log::Comment(NoThrowString().Format(L"Made XtermEngine"));
         delete pRenderEngineXterm;
         Log::Comment(NoThrowString().Format(L"Deleted."));
 
         hOutputFile.reset(INVALID_HANDLE_VALUE);
 
-        auto pRenderEngineXtermAscii = new XtermEngine(std::move(hOutputFile), p, SetUpViewport(), colorTable, colorTableSize, true);
+        auto pRenderEngineXtermAscii = new XtermEngine(std::move(hOutputFile), p, SetUpViewport(), colorTable, true);
         Log::Comment(NoThrowString().Format(L"Made XtermEngine"));
         delete pRenderEngineXtermAscii;
         Log::Comment(NoThrowString().Format(L"Deleted."));
 
         hOutputFile.reset(INVALID_HANDLE_VALUE);
 
-        auto pRenderEngineWinTelnet = new WinTelnetEngine(std::move(hOutputFile), p, SetUpViewport(), colorTable, colorTableSize);
+        auto pRenderEngineWinTelnet = new WinTelnetEngine(std::move(hOutputFile), p, SetUpViewport(), colorTable);
         Log::Comment(NoThrowString().Format(L"Made WinTelnetEngine"));
         delete pRenderEngineWinTelnet;
         Log::Comment(NoThrowString().Format(L"Deleted."));
@@ -180,8 +180,7 @@ void VtIoTests::DtorTestDeleteVtio()
         vtio->_pVtRenderEngine = std::make_unique<Xterm256Engine>(std::move(hOutputFile),
                                                                   p,
                                                                   SetUpViewport(),
-                                                                  colorTable,
-                                                                  colorTableSize);
+                                                                  colorTable);
         Log::Comment(NoThrowString().Format(L"Made Xterm256Engine"));
         delete vtio;
         Log::Comment(NoThrowString().Format(L"Deleted."));
@@ -193,7 +192,6 @@ void VtIoTests::DtorTestDeleteVtio()
                                                                p,
                                                                SetUpViewport(),
                                                                colorTable,
-                                                               colorTableSize,
                                                                false);
         Log::Comment(NoThrowString().Format(L"Made XtermEngine"));
         delete vtio;
@@ -206,7 +204,6 @@ void VtIoTests::DtorTestDeleteVtio()
                                                                p,
                                                                SetUpViewport(),
                                                                colorTable,
-                                                               colorTableSize,
                                                                true);
         Log::Comment(NoThrowString().Format(L"Made XtermEngine"));
         delete vtio;
@@ -218,8 +215,7 @@ void VtIoTests::DtorTestDeleteVtio()
         vtio->_pVtRenderEngine = std::make_unique<WinTelnetEngine>(std::move(hOutputFile),
                                                                    p,
                                                                    SetUpViewport(),
-                                                                   colorTable,
-                                                                   colorTableSize);
+                                                                   colorTable);
         Log::Comment(NoThrowString().Format(L"Made WinTelnetEngine"));
         delete vtio;
         Log::Comment(NoThrowString().Format(L"Deleted."));
@@ -253,8 +249,7 @@ void VtIoTests::DtorTestStackAlloc()
             vtio._pVtRenderEngine = std::make_unique<Xterm256Engine>(std::move(hOutputFile),
                                                                      p,
                                                                      SetUpViewport(),
-                                                                     colorTable,
-                                                                     colorTableSize);
+                                                                     colorTable);
         }
 
         hOutputFile.reset(INVALID_HANDLE_VALUE);
@@ -264,7 +259,6 @@ void VtIoTests::DtorTestStackAlloc()
                                                                   p,
                                                                   SetUpViewport(),
                                                                   colorTable,
-                                                                  colorTableSize,
                                                                   false);
         }
 
@@ -275,7 +269,6 @@ void VtIoTests::DtorTestStackAlloc()
                                                                   p,
                                                                   SetUpViewport(),
                                                                   colorTable,
-                                                                  colorTableSize,
                                                                   true);
         }
 
@@ -285,8 +278,7 @@ void VtIoTests::DtorTestStackAlloc()
             vtio._pVtRenderEngine = std::make_unique<WinTelnetEngine>(std::move(hOutputFile),
                                                                       p,
                                                                       SetUpViewport(),
-                                                                      colorTable,
-                                                                      colorTableSize);
+                                                                      colorTable);
         }
     }
 }
@@ -317,8 +309,7 @@ void VtIoTests::DtorTestStackAllocMany()
             vtio1._pVtRenderEngine = std::make_unique<Xterm256Engine>(std::move(hOutputFile),
                                                                       p,
                                                                       SetUpViewport(),
-                                                                      colorTable,
-                                                                      colorTableSize);
+                                                                      colorTable);
 
             hOutputFile.reset(INVALID_HANDLE_VALUE);
             VtIo vtio2;
@@ -326,7 +317,6 @@ void VtIoTests::DtorTestStackAllocMany()
                                                                    p,
                                                                    SetUpViewport(),
                                                                    colorTable,
-                                                                   colorTableSize,
                                                                    false);
 
             hOutputFile.reset(INVALID_HANDLE_VALUE);
@@ -335,7 +325,6 @@ void VtIoTests::DtorTestStackAllocMany()
                                                                    p,
                                                                    SetUpViewport(),
                                                                    colorTable,
-                                                                   colorTableSize,
                                                                    true);
 
             hOutputFile.reset(INVALID_HANDLE_VALUE);
@@ -343,8 +332,7 @@ void VtIoTests::DtorTestStackAllocMany()
             vtio4._pVtRenderEngine = std::make_unique<WinTelnetEngine>(std::move(hOutputFile),
                                                                        p,
                                                                        SetUpViewport(),
-                                                                       colorTable,
-                                                                       colorTableSize);
+                                                                       colorTable);
         }
     }
 }
diff --git a/src/host/ut_host/VtRendererTests.cpp b/src/host/ut_host/VtRendererTests.cpp
index 4be9db4b8..7e5bfdd21 100644
--- a/src/host/ut_host/VtRendererTests.cpp
+++ b/src/host/ut_host/VtRendererTests.cpp
@@ -189,7 +189,7 @@ void VtRendererTest::TestPaint(VtEngine& engine, std::function<void()> pfn)
 void VtRendererTest::VtSequenceHelperTests()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
 
     engine->SetTestCallback(pfn);
@@ -246,7 +246,7 @@ void VtRendererTest::VtSequenceHelperTests()
 void VtRendererTest::Xterm256TestInvalidate()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -434,7 +434,7 @@ void VtRendererTest::Xterm256TestInvalidate()
 void VtRendererTest::Xterm256TestColors()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -571,7 +571,7 @@ void VtRendererTest::Xterm256TestColors()
 void VtRendererTest::Xterm256TestCursor()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -723,7 +723,7 @@ void VtRendererTest::Xterm256TestExtendedAttributes()
     }
 
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -767,7 +767,7 @@ void VtRendererTest::Xterm256TestExtendedAttributes()
 void VtRendererTest::XtermTestInvalidate()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<XtermEngine> engine = std::make_unique<XtermEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE), false);
+    std::unique_ptr<XtermEngine> engine = std::make_unique<XtermEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, false);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -954,7 +954,7 @@ void VtRendererTest::XtermTestInvalidate()
 void VtRendererTest::XtermTestColors()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<XtermEngine> engine = std::make_unique<XtermEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE), false);
+    std::unique_ptr<XtermEngine> engine = std::make_unique<XtermEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, false);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1040,7 +1040,7 @@ void VtRendererTest::XtermTestColors()
 void VtRendererTest::XtermTestCursor()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<XtermEngine> engine = std::make_unique<XtermEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE), false);
+    std::unique_ptr<XtermEngine> engine = std::make_unique<XtermEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, false);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1149,7 +1149,7 @@ void VtRendererTest::XtermTestCursor()
 void VtRendererTest::WinTelnetTestInvalidate()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<WinTelnetEngine> engine = std::make_unique<WinTelnetEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<WinTelnetEngine> engine = std::make_unique<WinTelnetEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1221,7 +1221,7 @@ void VtRendererTest::WinTelnetTestInvalidate()
 void VtRendererTest::WinTelnetTestColors()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<WinTelnetEngine> engine = std::make_unique<WinTelnetEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<WinTelnetEngine> engine = std::make_unique<WinTelnetEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1299,7 +1299,7 @@ void VtRendererTest::WinTelnetTestColors()
 void VtRendererTest::WinTelnetTestCursor()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<WinTelnetEngine> engine = std::make_unique<WinTelnetEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<WinTelnetEngine> engine = std::make_unique<WinTelnetEngine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1379,7 +1379,7 @@ void VtRendererTest::WinTelnetTestCursor()
 void VtRendererTest::TestWrapping()
 {
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    std::unique_ptr<Xterm256Engine> engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, SetUpViewport(), g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1432,7 +1432,7 @@ void VtRendererTest::TestResize()
 {
     Viewport view = SetUpViewport();
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    auto engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, view, g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    auto engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, view, g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1469,7 +1469,7 @@ void VtRendererTest::TestCursorVisibility()
 {
     Viewport view = SetUpViewport();
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    auto engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, view, g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    auto engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, view, g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
@@ -1594,7 +1594,7 @@ void VtRendererTest::FormattedString()
 
     Viewport view = SetUpViewport();
     wil::unique_hfile hFile = wil::unique_hfile(INVALID_HANDLE_VALUE);
-    auto engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, view, g_ColorTable, static_cast<WORD>(COLOR_TABLE_SIZE));
+    auto engine = std::make_unique<Xterm256Engine>(std::move(hFile), p, view, g_ColorTable);
     auto pfn = std::bind(&VtRendererTest::WriteCallback, this, std::placeholders::_1, std::placeholders::_2);
     engine->SetTestCallback(pfn);
 
diff --git a/src/inc/conattrs.hpp b/src/inc/conattrs.hpp
index a168b173c..a33deaf49 100644
--- a/src/inc/conattrs.hpp
+++ b/src/inc/conattrs.hpp
@@ -24,26 +24,16 @@ enum class ExtendedAttributes : BYTE
 DEFINE_ENUM_FLAG_OPERATORS(ExtendedAttributes);
 
 WORD FindNearestTableIndex(const COLORREF Color,
-                           _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                           const WORD cColorTable);
+                           const std::basic_string_view<COLORREF> ColorTable);
 
 bool FindTableIndex(const COLORREF Color,
-                    _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                    const WORD cColorTable,
+                    const std::basic_string_view<COLORREF> ColorTable,
                     _Out_ WORD* const pFoundIndex);
 
 WORD XtermToWindowsIndex(const size_t index) noexcept;
 WORD Xterm256ToWindowsIndex(const size_t index) noexcept;
 WORD XtermToLegacy(const size_t xtermForeground, const size_t xtermBackground);
 
-COLORREF ForegroundColor(const WORD wLegacyAttrs,
-                         _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                         const size_t cColorTable);
-
-COLORREF BackgroundColor(const WORD wLegacyAttrs,
-                         _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                         const size_t cColorTable);
-
 const WORD WINDOWS_RED_ATTR = FOREGROUND_RED;
 const WORD WINDOWS_GREEN_ATTR = FOREGROUND_GREEN;
 const WORD WINDOWS_BLUE_ATTR = FOREGROUND_BLUE;
diff --git a/src/interactivity/win32/menu.cpp b/src/interactivity/win32/menu.cpp
index b9e09b32f..0555a315d 100644
--- a/src/interactivity/win32/menu.cpp
+++ b/src/interactivity/win32/menu.cpp
@@ -335,7 +335,10 @@ void Menu::s_ShowPropertiesDialog(HWND const hwnd, BOOL const Defaults)
     pStateInfo->NumberOfHistoryBuffers = gci.GetNumberOfHistoryBuffers();
     pStateInfo->HistoryNoDup = !!(gci.Flags & CONSOLE_HISTORY_NODUP);
 
-    memmove(pStateInfo->ColorTable, gci.GetColorTable(), gci.GetColorTableSize() * sizeof(COLORREF));
+    for (size_t i = 0; i < std::size(pStateInfo->ColorTable); i++)
+    {
+        pStateInfo->ColorTable[i] = gci.GetColorTableEntry(i);
+    }
 
     // Create mutable copies of the titles so the propsheet can do something with them.
     if (gci.GetOriginalTitle().length() > 0)
@@ -562,7 +565,10 @@ void Menu::s_PropertiesUpdate(PCONSOLE_STATE_INFO pStateInfo)
         }
     }
 
-    gci.SetColorTable(pStateInfo->ColorTable, gci.GetColorTableSize());
+    for (size_t i = 0; i < std::size(pStateInfo->ColorTable); i++)
+    {
+        gci.SetColorTableEntry(i, pStateInfo->ColorTable[i]);
+    }
 
     // Ensure that attributes only contain color specification.
     WI_ClearAllFlags(pStateInfo->ScreenAttributes, ~(FG_ATTRS | BG_ATTRS));
diff --git a/src/renderer/vt/WinTelnetEngine.cpp b/src/renderer/vt/WinTelnetEngine.cpp
index f08a186c3..c8081cf61 100644
--- a/src/renderer/vt/WinTelnetEngine.cpp
+++ b/src/renderer/vt/WinTelnetEngine.cpp
@@ -12,11 +12,9 @@ using namespace Microsoft::Console::Types;
 WinTelnetEngine::WinTelnetEngine(_In_ wil::unique_hfile hPipe,
                                  const IDefaultColorProvider& colorProvider,
                                  const Viewport initialViewport,
-                                 _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                                 const WORD cColorTable) :
+                                 const std::basic_string_view<COLORREF> colorTable) :
     VtEngine(std::move(hPipe), colorProvider, initialViewport),
-    _ColorTable(ColorTable),
-    _cColorTable(cColorTable)
+    _colorTable(colorTable)
 {
 }
 
@@ -42,8 +40,7 @@ WinTelnetEngine::WinTelnetEngine(_In_ wil::unique_hfile hPipe,
     return VtEngine::_16ColorUpdateDrawingBrushes(colorForeground,
                                                   colorBackground,
                                                   WI_IsFlagSet(extendedAttrs, ExtendedAttributes::Bold),
-                                                  _ColorTable,
-                                                  _cColorTable);
+                                                  _colorTable);
 }
 
 // Routine Description:
diff --git a/src/renderer/vt/WinTelnetEngine.hpp b/src/renderer/vt/WinTelnetEngine.hpp
index 179697a5a..4d40c232d 100644
--- a/src/renderer/vt/WinTelnetEngine.hpp
+++ b/src/renderer/vt/WinTelnetEngine.hpp
@@ -26,8 +26,7 @@ namespace Microsoft::Console::Render
         WinTelnetEngine(_In_ wil::unique_hfile hPipe,
                         const Microsoft::Console::IDefaultColorProvider& colorProvider,
                         const Microsoft::Console::Types::Viewport initialViewport,
-                        _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                        const WORD cColorTable);
+                        const std::basic_string_view<COLORREF> colorTable);
         virtual ~WinTelnetEngine() override = default;
 
         [[nodiscard]] HRESULT UpdateDrawingBrushes(const COLORREF colorForeground,
@@ -45,8 +44,7 @@ namespace Microsoft::Console::Render
         [[nodiscard]] HRESULT _MoveCursor(const COORD coord) noexcept;
 
     private:
-        const COLORREF* const _ColorTable;
-        const WORD _cColorTable;
+        const std::basic_string_view<COLORREF> _colorTable;
 
 #ifdef UNIT_TESTING
         friend class VtRendererTest;
diff --git a/src/renderer/vt/Xterm256Engine.cpp b/src/renderer/vt/Xterm256Engine.cpp
index ba440db03..2fed81c2a 100644
--- a/src/renderer/vt/Xterm256Engine.cpp
+++ b/src/renderer/vt/Xterm256Engine.cpp
@@ -11,9 +11,8 @@ using namespace Microsoft::Console::Types;
 Xterm256Engine::Xterm256Engine(_In_ wil::unique_hfile hPipe,
                                const IDefaultColorProvider& colorProvider,
                                const Viewport initialViewport,
-                               _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                               const WORD cColorTable) :
-    XtermEngine(std::move(hPipe), colorProvider, initialViewport, ColorTable, cColorTable, false),
+                               const std::basic_string_view<COLORREF> colorTable) :
+    XtermEngine(std::move(hPipe), colorProvider, initialViewport, colorTable, false),
     _lastExtendedAttrsState{ ExtendedAttributes::Normal }
 {
 }
@@ -52,8 +51,7 @@ Xterm256Engine::Xterm256Engine(_In_ wil::unique_hfile hPipe,
     return VtEngine::_RgbUpdateDrawingBrushes(colorForeground,
                                               colorBackground,
                                               WI_IsFlagSet(extendedAttrs, ExtendedAttributes::Bold),
-                                              _ColorTable,
-                                              _cColorTable);
+                                              _colorTable);
 }
 
 // Routine Description:
diff --git a/src/renderer/vt/Xterm256Engine.hpp b/src/renderer/vt/Xterm256Engine.hpp
index 3addb195e..e4e5562f6 100644
--- a/src/renderer/vt/Xterm256Engine.hpp
+++ b/src/renderer/vt/Xterm256Engine.hpp
@@ -26,8 +26,7 @@ namespace Microsoft::Console::Render
         Xterm256Engine(_In_ wil::unique_hfile hPipe,
                        const Microsoft::Console::IDefaultColorProvider& colorProvider,
                        const Microsoft::Console::Types::Viewport initialViewport,
-                       _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                       const WORD cColorTable);
+                       const std::basic_string_view<COLORREF> colorTable);
 
         virtual ~Xterm256Engine() override = default;
 
diff --git a/src/renderer/vt/XtermEngine.cpp b/src/renderer/vt/XtermEngine.cpp
index f212c1eeb..6073b0358 100644
--- a/src/renderer/vt/XtermEngine.cpp
+++ b/src/renderer/vt/XtermEngine.cpp
@@ -12,12 +12,10 @@ using namespace Microsoft::Console::Types;
 XtermEngine::XtermEngine(_In_ wil::unique_hfile hPipe,
                          const IDefaultColorProvider& colorProvider,
                          const Viewport initialViewport,
-                         _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                         const WORD cColorTable,
+                         const std::basic_string_view<COLORREF> colorTable,
                          const bool fUseAsciiOnly) :
     VtEngine(std::move(hPipe), colorProvider, initialViewport),
-    _ColorTable(ColorTable),
-    _cColorTable(cColorTable),
+    _colorTable(colorTable),
     _fUseAsciiOnly(fUseAsciiOnly),
     _usingUnderLine(false),
     _needToDisableCursor(false),
@@ -192,8 +190,7 @@ XtermEngine::XtermEngine(_In_ wil::unique_hfile hPipe,
     return VtEngine::_16ColorUpdateDrawingBrushes(colorForeground,
                                                   colorBackground,
                                                   WI_IsFlagSet(extendedAttrs, ExtendedAttributes::Bold),
-                                                  _ColorTable,
-                                                  _cColorTable);
+                                                  _colorTable);
 }
 
 // Routine Description:
diff --git a/src/renderer/vt/XtermEngine.hpp b/src/renderer/vt/XtermEngine.hpp
index e6a0a868c..cf5249ab6 100644
--- a/src/renderer/vt/XtermEngine.hpp
+++ b/src/renderer/vt/XtermEngine.hpp
@@ -30,8 +30,7 @@ namespace Microsoft::Console::Render
         XtermEngine(_In_ wil::unique_hfile hPipe,
                     const Microsoft::Console::IDefaultColorProvider& colorProvider,
                     const Microsoft::Console::Types::Viewport initialViewport,
-                    _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                    const WORD cColorTable,
+                    const std::basic_string_view<COLORREF> colorTable,
                     const bool fUseAsciiOnly);
 
         virtual ~XtermEngine() override = default;
@@ -57,8 +56,7 @@ namespace Microsoft::Console::Render
         [[nodiscard]] HRESULT WriteTerminalW(const std::wstring_view str) noexcept override;
 
     protected:
-        const COLORREF* const _ColorTable;
-        const WORD _cColorTable;
+        const std::basic_string_view<COLORREF> _colorTable;
         const bool _fUseAsciiOnly;
         bool _usingUnderLine;
         bool _needToDisableCursor;
diff --git a/src/renderer/vt/paint.cpp b/src/renderer/vt/paint.cpp
index 0294fe20b..d9604f685 100644
--- a/src/renderer/vt/paint.cpp
+++ b/src/renderer/vt/paint.cpp
@@ -192,8 +192,7 @@ using namespace Microsoft::Console::Types;
 [[nodiscard]] HRESULT VtEngine::_RgbUpdateDrawingBrushes(const COLORREF colorForeground,
                                                          const COLORREF colorBackground,
                                                          const bool isBold,
-                                                         _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                                                         const WORD cColorTable) noexcept
+                                                         const std::basic_string_view<COLORREF> colorTable) noexcept
 {
     const bool fgChanged = colorForeground != _LastFG;
     const bool bgChanged = colorBackground != _LastBG;
@@ -232,7 +231,7 @@ using namespace Microsoft::Console::Types;
             {
                 RETURN_IF_FAILED(_SetGraphicsRenditionDefaultColor(true));
             }
-            else if (::FindTableIndex(colorForeground, ColorTable, cColorTable, &wFoundColor))
+            else if (::FindTableIndex(colorForeground, colorTable, &wFoundColor))
             {
                 RETURN_IF_FAILED(_SetGraphicsRendition16Color(wFoundColor, true));
             }
@@ -249,7 +248,7 @@ using namespace Microsoft::Console::Types;
             {
                 RETURN_IF_FAILED(_SetGraphicsRenditionDefaultColor(false));
             }
-            else if (::FindTableIndex(colorBackground, ColorTable, cColorTable, &wFoundColor))
+            else if (::FindTableIndex(colorBackground, colorTable, &wFoundColor))
             {
                 RETURN_IF_FAILED(_SetGraphicsRendition16Color(wFoundColor, false));
             }
@@ -278,8 +277,7 @@ using namespace Microsoft::Console::Types;
 [[nodiscard]] HRESULT VtEngine::_16ColorUpdateDrawingBrushes(const COLORREF colorForeground,
                                                              const COLORREF colorBackground,
                                                              const bool isBold,
-                                                             _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                                                             const WORD cColorTable) noexcept
+                                                             const std::basic_string_view<COLORREF> colorTable) noexcept
 {
     const bool fgChanged = colorForeground != _LastFG;
     const bool bgChanged = colorBackground != _LastBG;
@@ -312,7 +310,7 @@ using namespace Microsoft::Console::Types;
 
         if (fgChanged)
         {
-            const WORD wNearestFg = ::FindNearestTableIndex(colorForeground, ColorTable, cColorTable);
+            const WORD wNearestFg = ::FindNearestTableIndex(colorForeground, colorTable);
             RETURN_IF_FAILED(_SetGraphicsRendition16Color(wNearestFg, true));
 
             _LastFG = colorForeground;
@@ -320,7 +318,7 @@ using namespace Microsoft::Console::Types;
 
         if (bgChanged)
         {
-            const WORD wNearestBg = ::FindNearestTableIndex(colorBackground, ColorTable, cColorTable);
+            const WORD wNearestBg = ::FindNearestTableIndex(colorBackground, colorTable);
             RETURN_IF_FAILED(_SetGraphicsRendition16Color(wNearestBg, false));
 
             _LastBG = colorBackground;
diff --git a/src/renderer/vt/vtrenderer.hpp b/src/renderer/vt/vtrenderer.hpp
index 5f683bc9b..715cd9ce7 100644
--- a/src/renderer/vt/vtrenderer.hpp
+++ b/src/renderer/vt/vtrenderer.hpp
@@ -212,13 +212,11 @@ namespace Microsoft::Console::Render
         [[nodiscard]] HRESULT _RgbUpdateDrawingBrushes(const COLORREF colorForeground,
                                                        const COLORREF colorBackground,
                                                        const bool isBold,
-                                                       _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                                                       const WORD cColorTable) noexcept;
+                                                       const std::basic_string_view<COLORREF> colorTable) noexcept;
         [[nodiscard]] HRESULT _16ColorUpdateDrawingBrushes(const COLORREF colorForeground,
                                                            const COLORREF colorBackground,
                                                            const bool isBold,
-                                                           _In_reads_(cColorTable) const COLORREF* const ColorTable,
-                                                           const WORD cColorTable) noexcept;
+                                                           const std::basic_string_view<COLORREF> colorTable) noexcept;
 
         bool _WillWriteSingleChar() const;
 
diff --git a/src/terminal/adapter/adaptDispatch.hpp b/src/terminal/adapter/adaptDispatch.hpp
index 8bdd40b72..a5319d912 100644
--- a/src/terminal/adapter/adaptDispatch.hpp
+++ b/src/terminal/adapter/adaptDispatch.hpp
@@ -178,6 +178,6 @@ namespace Microsoft::Console::VirtualTerminal
 
         size_t _SetRgbColorsHelper(const std::basic_string_view<DispatchTypes::GraphicsOptions> options,
                                    TextAttribute& attr,
-                                   const bool isForeground);
+                                   const bool isForeground) noexcept;
     };
 }
diff --git a/src/terminal/adapter/adaptDispatchGraphics.cpp b/src/terminal/adapter/adaptDispatchGraphics.cpp
index 9e565ecf3..7cb0d161f 100644
--- a/src/terminal/adapter/adaptDispatchGraphics.cpp
+++ b/src/terminal/adapter/adaptDispatchGraphics.cpp
@@ -49,7 +49,7 @@ const BYTE BRIGHT_WHITE   = BRIGHT_ATTR | RED_ATTR | GREEN_ATTR | BLUE_ATTR;
 // - The number of options consumed, not including the initial 38/48.
 size_t AdaptDispatch::_SetRgbColorsHelper(const std::basic_string_view<DispatchTypes::GraphicsOptions> options,
                                           TextAttribute& attr,
-                                          const bool isForeground)
+                                          const bool isForeground) noexcept
 {
     size_t optionsConsumed = 0;
     if (options.size() >= 1)
@@ -73,11 +73,17 @@ size_t AdaptDispatch::_SetRgbColorsHelper(const std::basic_string_view<DispatchT
         {
             optionsConsumed = 2;
             const size_t tableIndex = til::at(options, 1);
-            COLORREF rgbColor;
-            if (_pConApi->PrivateGetColorTableEntry(tableIndex, rgbColor))
+            if (tableIndex <= 255)
             {
-                // TODO GH#1223: Decouple xterm-256color indexed storage from RGB storage
-                attr.SetColor(rgbColor, isForeground);
+                const auto adjustedIndex = gsl::narrow_cast<BYTE>(::Xterm256ToWindowsIndex(tableIndex));
+                if (isForeground)
+                {
+                    attr.SetIndexedForeground256(adjustedIndex);
+                }
+                else
+                {
+                    attr.SetIndexedBackground256(adjustedIndex);
+                }
             }
         }
     }
diff --git a/src/terminal/adapter/ut_adapter/adapterTest.cpp b/src/terminal/adapter/ut_adapter/adapterTest.cpp
index fbcbe3e6e..7b16c3d69 100644
--- a/src/terminal/adapter/ut_adapter/adapterTest.cpp
+++ b/src/terminal/adapter/ut_adapter/adapterTest.cpp
@@ -1286,42 +1286,50 @@ public:
         case DispatchTypes::GraphicsOptions::ForegroundBlack:
             Log::Comment(L"Testing graphics 'Foreground Color Black'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = 0;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(0);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundBlue:
             Log::Comment(L"Testing graphics 'Foreground Color Blue'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_BLUE;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_BLUE);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundGreen:
             Log::Comment(L"Testing graphics 'Foreground Color Green'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_GREEN);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundCyan:
             Log::Comment(L"Testing graphics 'Foreground Color Cyan'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_BLUE | FOREGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_BLUE | FOREGROUND_GREEN);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundRed:
             Log::Comment(L"Testing graphics 'Foreground Color Red'");
             _testGetSet->_attribute = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundMagenta:
             Log::Comment(L"Testing graphics 'Foreground Color Magenta'");
             _testGetSet->_attribute = FOREGROUND_GREEN | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_BLUE | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_BLUE | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundYellow:
             Log::Comment(L"Testing graphics 'Foreground Color Yellow'");
             _testGetSet->_attribute = FOREGROUND_BLUE | FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_GREEN | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_GREEN | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundWhite:
             Log::Comment(L"Testing graphics 'Foreground Color White'");
             _testGetSet->_attribute = FOREGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::ForegroundDefault:
             Log::Comment(L"Testing graphics 'Foreground Color Default'");
@@ -1333,42 +1341,50 @@ public:
         case DispatchTypes::GraphicsOptions::BackgroundBlack:
             Log::Comment(L"Testing graphics 'Background Color Black'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = 0;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground(0);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundBlue:
             Log::Comment(L"Testing graphics 'Background Color Blue'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_BLUE;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground(BACKGROUND_BLUE >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundGreen:
             Log::Comment(L"Testing graphics 'Background Color Green'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_BLUE | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground(BACKGROUND_GREEN >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundCyan:
             Log::Comment(L"Testing graphics 'Background Color Cyan'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_BLUE | BACKGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_BLUE | BACKGROUND_GREEN) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundRed:
             Log::Comment(L"Testing graphics 'Background Color Red'");
             _testGetSet->_attribute = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground(BACKGROUND_RED >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundMagenta:
             Log::Comment(L"Testing graphics 'Background Color Magenta'");
             _testGetSet->_attribute = BACKGROUND_GREEN | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_BLUE | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_BLUE | BACKGROUND_RED) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundYellow:
             Log::Comment(L"Testing graphics 'Background Color Yellow'");
             _testGetSet->_attribute = BACKGROUND_BLUE | BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_GREEN | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_GREEN | BACKGROUND_RED) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundWhite:
             Log::Comment(L"Testing graphics 'Background Color White'");
             _testGetSet->_attribute = BACKGROUND_INTENSITY;
-            _testGetSet->_expectedAttribute = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BackgroundDefault:
             Log::Comment(L"Testing graphics 'Background Color Default'");
@@ -1380,82 +1396,98 @@ public:
         case DispatchTypes::GraphicsOptions::BrightForegroundBlack:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Black'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundBlue:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Blue'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_GREEN;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_BLUE;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_BLUE);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundGreen:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Green'");
             _testGetSet->_attribute = FOREGROUND_RED | FOREGROUND_BLUE;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_GREEN);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundCyan:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Cyan'");
             _testGetSet->_attribute = FOREGROUND_RED;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_GREEN);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundRed:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Red'");
             _testGetSet->_attribute = FOREGROUND_BLUE | FOREGROUND_GREEN;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundMagenta:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Magenta'");
             _testGetSet->_attribute = FOREGROUND_GREEN;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundYellow:
             Log::Comment(L"Testing graphics 'Bright Foreground Color Yellow'");
             _testGetSet->_attribute = FOREGROUND_BLUE;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::BrightForegroundWhite:
             Log::Comment(L"Testing graphics 'Bright Foreground Color White'");
             _testGetSet->_attribute = 0;
-            _testGetSet->_expectedAttribute = FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedForeground(FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundBlack:
             Log::Comment(L"Testing graphics 'Bright Background Color Black'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground(BACKGROUND_INTENSITY >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundBlue:
             Log::Comment(L"Testing graphics 'Bright Background Color Blue'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_GREEN;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_BLUE;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_BLUE) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundGreen:
             Log::Comment(L"Testing graphics 'Bright Background Color Green'");
             _testGetSet->_attribute = BACKGROUND_RED | BACKGROUND_BLUE;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_GREEN) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundCyan:
             Log::Comment(L"Testing graphics 'Bright Background Color Cyan'");
             _testGetSet->_attribute = BACKGROUND_RED;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_BLUE | BACKGROUND_GREEN;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_BLUE | BACKGROUND_GREEN) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundRed:
             Log::Comment(L"Testing graphics 'Bright Background Color Red'");
             _testGetSet->_attribute = BACKGROUND_BLUE | BACKGROUND_GREEN;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_RED) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundMagenta:
             Log::Comment(L"Testing graphics 'Bright Background Color Magenta'");
             _testGetSet->_attribute = BACKGROUND_GREEN;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_BLUE | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_BLUE | BACKGROUND_RED) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundYellow:
             Log::Comment(L"Testing graphics 'Bright Background Color Yellow'");
             _testGetSet->_attribute = BACKGROUND_BLUE;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_GREEN | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_GREEN | BACKGROUND_RED) >> 4);
             break;
         case DispatchTypes::GraphicsOptions::BrightBackgroundWhite:
             Log::Comment(L"Testing graphics 'Bright Background Color White'");
             _testGetSet->_attribute = 0;
-            _testGetSet->_expectedAttribute = BACKGROUND_INTENSITY | BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED;
+            _testGetSet->_expectedAttribute = _testGetSet->_attribute;
+            _testGetSet->_expectedAttribute.SetIndexedBackground((BACKGROUND_INTENSITY | BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED) >> 4);
             break;
         default:
             VERIFY_FAIL(L"Test not implemented yet!");
@@ -1880,32 +1912,28 @@ public:
         rgOptions[0] = DispatchTypes::GraphicsOptions::ForegroundExtended;
         rgOptions[1] = DispatchTypes::GraphicsOptions::BlinkOrXterm256Index;
         rgOptions[2] = (DispatchTypes::GraphicsOptions)2; // Green
-        _testGetSet->_expectedAttribute.SetForeground(2);
-        _testGetSet->_expectedColorTableIndex = 2;
+        _testGetSet->_expectedAttribute.SetIndexedForeground256((BYTE)::XtermToWindowsIndex(2));
         VERIFY_IS_TRUE(_pDispatch.get()->SetGraphicsRendition({ rgOptions, cOptions }));
 
         Log::Comment(L"Test 2: Change Background");
         rgOptions[0] = DispatchTypes::GraphicsOptions::BackgroundExtended;
         rgOptions[1] = DispatchTypes::GraphicsOptions::BlinkOrXterm256Index;
         rgOptions[2] = (DispatchTypes::GraphicsOptions)9; // Bright Red
-        _testGetSet->_expectedAttribute.SetBackground(9);
-        _testGetSet->_expectedColorTableIndex = 9;
+        _testGetSet->_expectedAttribute.SetIndexedBackground256((BYTE)::XtermToWindowsIndex(9));
         VERIFY_IS_TRUE(_pDispatch.get()->SetGraphicsRendition({ rgOptions, cOptions }));
 
         Log::Comment(L"Test 3: Change Foreground to RGB color");
         rgOptions[0] = DispatchTypes::GraphicsOptions::ForegroundExtended;
         rgOptions[1] = DispatchTypes::GraphicsOptions::BlinkOrXterm256Index;
         rgOptions[2] = (DispatchTypes::GraphicsOptions)42; // Arbitrary Color
-        _testGetSet->_expectedColorTableIndex = 42;
-        _testGetSet->_expectedAttribute.SetForeground(42);
+        _testGetSet->_expectedAttribute.SetIndexedForeground256(42);
         VERIFY_IS_TRUE(_pDispatch.get()->SetGraphicsRendition({ rgOptions, cOptions }));
 
         Log::Comment(L"Test 4: Change Background to RGB color");
         rgOptions[0] = DispatchTypes::GraphicsOptions::BackgroundExtended;
         rgOptions[1] = DispatchTypes::GraphicsOptions::BlinkOrXterm256Index;
         rgOptions[2] = (DispatchTypes::GraphicsOptions)142; // Arbitrary Color
-        _testGetSet->_expectedColorTableIndex = 142;
-        _testGetSet->_expectedAttribute.SetBackground(142);
+        _testGetSet->_expectedAttribute.SetIndexedBackground256(142);
         VERIFY_IS_TRUE(_pDispatch.get()->SetGraphicsRendition({ rgOptions, cOptions }));
 
         Log::Comment(L"Test 5: Change Foreground to Legacy Attr while BG is RGB color");
@@ -1915,8 +1943,7 @@ public:
         rgOptions[0] = DispatchTypes::GraphicsOptions::ForegroundExtended;
         rgOptions[1] = DispatchTypes::GraphicsOptions::BlinkOrXterm256Index;
         rgOptions[2] = (DispatchTypes::GraphicsOptions)9; // Bright Red
-        _testGetSet->_expectedAttribute.SetForeground(9);
-        _testGetSet->_expectedColorTableIndex = 9;
+        _testGetSet->_expectedAttribute.SetIndexedForeground256((BYTE)::XtermToWindowsIndex(9));
         VERIFY_IS_TRUE(_pDispatch.get()->SetGraphicsRendition({ rgOptions, cOptions }));
     }
 
diff --git a/tools/ConsoleTypes.natvis b/tools/ConsoleTypes.natvis
index 27b29d154..224afd9bd 100644
--- a/tools/ConsoleTypes.natvis
+++ b/tools/ConsoleTypes.natvis
@@ -2,7 +2,8 @@
 <AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
     <!-- See https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2017#BKMK_Syntax_reference for documentation -->
     <Type Name="TextColor">
-        <DisplayString Condition="_meta==ColorType::IsIndex">{{Index:{_index}}}</DisplayString>
+        <DisplayString Condition="_meta==ColorType::IsIndex256">{{Index256:{_index}}}</DisplayString>
+        <DisplayString Condition="_meta==ColorType::IsIndex16">{{Index16:{_index}}}</DisplayString>
         <DisplayString Condition="_meta==ColorType::IsDefault">{{Default}}</DisplayString>
         <DisplayString Condition="_meta==ColorType::IsRgb">{{RGB:{_red},{_green},{_blue}}}</DisplayString>
         <Expand></Expand>